Mounting for typewriters or other machines on cabinets



' F. H. BLOOM'STRAN MOU June 19, 1951 2,557,719

NTING FOR TYPEWRITERS OR OTHER MACHINES ON CABINETS 5 Sheets-Sheet 1 Filed Sept. 22, 1948 4 m 0 Q w 5 June 19, 1951' F. H. BLOOMSTRAN MOUNTING FOR TYP EWRITERS OR OTHER MACHINES ON CABINETS s She ets-Sheet 2 Filed Spt. 22, 1948 June 1951 F. H. BLooM sTRAN 2,557,719

MOUNTING FOR TYPEWRITERS OR OTHER MACHINES ON CABINETS 5 Sheets-Sheet 3 Filed Sept. 22, 1948 INVENTOR.

B i m 6%, Qffornqyg,

June 19, 1951 F. H. BLOOMSTRAN I MOUNTING FOR TYPEWRITERS OR OTHER MACHINES ON CABINETS 5 Sheets-Sheet 4 Filed Sept. 22, 1948 VENTOR.

Ma M

F. H; BLOOMSTRAN MOUNTING FOR T June 19, 1951 YPEWRITERS OR OTHER MACHINES 0N CABINETS 5 Sheets-Sheet 5 Filed Sept. 22, l948- Patented June 19, 1951 MOUNTING FOR TYPEWRITERS OR OTHER MACHINES ON CABINETS Floyd H. Bloomstran,

Jamestown, N. Y., assignor to Art Metal Construction Company, Jamestown, N. Y.

Application September 22, 1948, Serial No. 50,606

16 Claims.

This invention relates to improvements in desks or cabinets having typewriters or other machines mounted on supports in such manner that the machine may be supported in an inoperative position within a compartment of the desk or cabinet or may be moved out of the compartment and then swung upwardly into an operative position for use.

One of the objects of this invention is to provide a mounting of improved construction for a typewriter or other machine in which the supporting structure is soarranged as to provide ample stability and freedom from vibration of the desk or cabinet on which the machine is mounted. Another object is to provide improved means for moving the machine while in verti cal or hanging position into and out of the compartment in which it is housed when not in use. Another object is to provide mechanism for mounting a machine on a cabinet, which mechanism can be more readily assembled and placed in the cabinet. A further object is to provide mechanism for preventing movement'of the machine intothe compartment except when in its .lowest position and when in position to engage a guide rail for preventing swinging of the machine while in the compartment.

It is also an object of this invention to provide a carriage of improved construction for moving the machine into and out of its compartment; also to provide guide means of improved construction for guiding the carriage in its movement into and out of its compartment. A further object is to provide means for preventing the machine from swinging when in said compartment and for preventing the moving of the machine into its compartment except when properly engaged with the means for preventing the swinging. Another object is to provide means of improved construction for firmly securing the machine supporting frame in its upper or operative position.

Other objects and advantages of this invention will appear from the following description and claims.

In the accompanying drawings which illustrate by way of example one embodiment of this invention:

Fig. 1 is a sectional elevation through a desk pedestal or compartment showing a machinesupporting mechanism embodying this invention in the position which it occupies when the machine is not in use. 3

Fig. 2 is a similar elevation showing the sup porting mechanism in the position in which the machine has been drawn forwardly out of the pedestal or compartment of the desk, and before the machine is swung upwardly into its operative position. 4

Fig. 3 is a front elevation of the mechanism shown in Fig. 2, on an enlarged scale.

Fig. 4 is a fragmentary, transverse, sectional elevation thereof, on line 4-4, Fig. 1. V

Fig. 5 is a top plan view of the mechanism and a portion of the desk pedestal or compartment, showing the parts in the position which they occupy when the machine is in its operative position.

Fig. 6 is a fragmentary, thereof, on line 6-6, Fig. 5.

Fig, 7 is a fragmentary, thereof, on line 7-1, Fig. 2.

Fig. 8 is a transverse, sectional plan view thereof, on line 8-8, Fig. 3.

Fig. 9 is a fragmentary sectional view thereof, on line 99, Fig. 8.

Fig. 10 is a fragmentary sectional elevation thereof, on line |0I0, Fig. 5.

Fig. 11 is a top plan view, partly in section, of the structure shown in Fig. 10.

sectional elevation sectional plan view The machine supporting structure may be applied'to any suitable or desired compartment or container for the machine and, in the construction illustrated, the mechanism is mounted in a pedestal of a. desk including an upright, outer side wall l 9, an opposite side wall I l, a rear wall l2, and a bottom wall IS. The pedestal has a front wall M which may be closed by means of a door I5, including a suitable handle [6 and mounted on hinges IT. The outer wall may be reinforced in any suitable manner, for example, by means of a pair of upright frame members l8 and IQ of Z-shape in cross section, which may be welded or otherwise suitably secured to the outer side wall It and the lower ends of which may be secured to two lower reinforcing members 20 secured to the bottom wall l3. Similarly, the inner side wall II may be reinforced by means of one or more reinforcing members 22, one of which is shown in Fig. 5, and which may also be of Z- shaped cross section. The parts of the desk pedestal or cabinet may, of course, be of other suitable or desired structure.

The typewriter or other machine may be suitably secured in any well known manner to a table top or plate 25 which, in turn, is mounted on a machine supporting frame of any desired construction, that shown including a pair of structural members 26 and 21 which may,'for example, be of channel shape in cross section and or container, thus increasing 1 'desk and also reducing the vibration of the desk 'by having the shown in Fig. 2, when the machine is drawn connected at their inner ends by means of a cross member 28, and at their outer or front ends to a transversely extending reinforcing bar 29. The members 26, 21, 28 and 29 may be secured together in any suitable manner, such for example, by welding, to form a rigid frame to which the machine table topor platform is suitably secured, and if desired, one or more cross braces (not shown), connecting the members 26 and 21 may be provided, to provide a strong and rigid machine supporting structure. The outer edges of the table top may be flanged downwardlyt'o further increase the rigidity of the structure and to protect the user of the machine from coming into contact with sharp or roughedges. represents a hand rail or bar secured at its ends to the table top at the outer "end the're'of'to 'facilitate the swinging of the table into and out of its operative position.

The supporting platform or table top 25 and the supportingframe on which it is mounted together with the machine mounted on the table top are supported-on'a carriage which is mounted atone side of the compartment infthepedestal or cabinet to move lengthwise thereof. The supporting frame is hingedly mounted "on the carriage to swing to and from a position in which the same is in a substantially vertical or hanging position shown in Figs. 1 and '2 and into a horizontal position shown chine is in operative relation to an operator. The carriage is oftruss orcantilever form, having a substantially horizontally extending rigid bar 32 which is rigidly securedto-and extends forwardly from an upright plate or truss member which is guided for movement lengthwise of the compartment. In the particular construction shown, the transversely extending frame members 28 and 29 have their ends pivoted to the bar 32 in any suitable manner, for example, by means of a stud or pin 33 welded or otherwise'rig'i'dly secured to the frame member 28 and formed to fit into a hole drilled in the rear end of the bar32, and a pivot screw 34 passing through a hole in the end of the transverse frame member threaded engagement in a hole in of the slidable bar 32.

In order to provide ample stability of 'the'desk or container for the machine'when a machine, which may be fairly heavy,

the front end 7 7 container, it is desirable to arrange the supportingmechanism for the machine as low as possible within the pedestal the stability of the rear legs of the desk resting firmly on the floor. A carriage of a cantilever shape as shown is desirable for this purpose, since the rails or tracks on which the carriage moves and which support the weight of the carriage and the parts mounted thereon may then be arranged well below the upper portion of the pedestal or cabinet on which the machine is supported. The lower portion of the substantially upright plate or truss member 35 is suitably mounted to roll or slide on a supporting rail 36. The plate 35 is somewhat truss-shaped, having a part '31 extending upwardly and forwardly from the lower edge thereof andis preferably reinforced or'stiffened'by 38 and'39 formed on the Consequently; as

forwardly into its operative position, the greater part of the plate 35 will still be within the pedestal means of integral flanges front and rear'edges thereof.

in Fig. 5, in which the ma- 29 and having a I V is supported beyond the front edge of the'desk or or container, thus providing increased stability of the desk or container.

Any suitable or desirable means may be provided for supporting this truss plate on the rail 36 in such a manner that it may move lengthwise of this rail. In the construction shown for this purpose, the rail 36 is provided with upper and lower V-shaped edge portions 40 and 4|, Figs. 2, 33nd 4, and the truss plate 35 has a pair of upper 'rollers 42 mounted to rotate on hearing pins 43 rigidly securedto thetruss plate 35, these rollers operating on the V-shaped upper portion 40 of the track 36. Another pair of rollers 45 is mounted on theplate 35 in such a manner as to en- 'gage'the lower'V-shaped portion 4% of the rail 36. These rollers are spaced apart horizontally sufficientlytopr'ovide a secure bearing of the truss plate on the rail and to avoid lost motion between the truss plate 35 and the rail, so that the supporting plate or table top 25 for the machine maybe securely held in horizontal position, the lower rollers 45 being preferably adjustabl'y mounted on the truss'plate 35. The bearing'pins 46 for the lower rollers 45 thereof extend through upright slots on the truss plate and adjusting screws 41 are provided 'which have a threaded engagement with a reinforcing flange 48 formed by bending over the lowered'ge'of the'itruss' plate and extending along the-lower edge of the plate 35. The upper ends of these screws may engage the bearing pins 46 or spacing bushings 49 extending about the same. By-means of this-construction, the lower rollers 45, "when the bearing 'pins'46 are loosely 'cla'mpedto the truss plate 35,

- may be urged upwardly into positions in which they will press against the lower' V-shape'd portion 4| of the'track or rail 36 to the desired extent so as to provide proper rolling contact without play 'between thetruss member 35 and the track or rail 36. When the rollers are properly adjusted, the bearing pins 46 are tightly secured to the'truss'pl'ate and theadjusting screws may be secured by-r'neans of lock nuts in their correct positions. Any other means for accomplishing this-purpose may be employedif desired. "The truss"member'or'plate 35 may be provided with a longitudinally extending channel-shaped offset portion50 to provide ample clearance between this plate and the rail 36.

In order to' prevent the truss plate 35 from rolling beyond the end of the track or rail 36, step means of anysuitable type maybe providedsuch for example as an angle-shaped member 52, see particularly Fig. '7, secured to the offset-portion '56 of the truss plate 35 and having a leg extending through a' hole or'ope'ning in the offset portion 56, into position to engage a resilient or flexible 'bumper53 mounted on and secured to a part of therail' 36. The side wall of the rail'may have a projection 54 partly punched out therefrom and bent over'to'form a stop for the resilient bumper member 53. By means of this constructiommovement' of the; truss plate beyond the' end of the trackor rail 36 is prevented.

The rail 36 is mounted to slide to a certain extht-withiri the-pedestal or container so-that the'f ront end of i this rail may extend slightly beyond the front face of the cabinet'or de's'k when the' machine is in its operative position. Any"suitable 'mounting to provide such endwise 'niovementof the'rail 36 may be provided, and in the construction illustrated, a stationary guide track 56 is provided whichis' bolted" or otherwise secured to the upright frame members 18 and I9. In the particularconstruction shown, rigid reinforcing plates or straps 51, Figs. 2, 3 and4, are provided to which the stationary guide track 56 is secured by any suitable means, such as bolts or screws 58 and which plates are secured to the frame members I 8 and [,9 for reinforcing portions of the same. The reinforcing plates are preferably secured to the frame members by bolts The stationary guide track has a flat bearing surface secured to the plate 51, and a pair of trough or V-shaped extensions 66 and 6|, the outer surfaces of which form recesses for balls or rollers 62 and 63. The inner surfaces of the angle-shaped members 40 and 4| of the rail 36 also cooperate with the rollers or balls 62 and 63 so as to permit rolling contact between the rail 36 and the stationary track 56.

Suitable stops are also provided for limiting the extent to which the rail 36 may move relatively to the stationary track 56. For this purpose, in

the construction shown, seeFig. '7, a stop 65, which may be similar in construction to the stop 52, is arranged on the stationary rail 56 and has a part which extends through an aperture therein into a position to engage a resilient stop or bumper 66 mounted on an inwardly projecting ear or lug 61 partly stamped out of the rail 36 to limit the outward movement of the rail. This stop 65 may also be used to engage with another bumper 68 mounted on an integrally formed lug 69 of the rail 36 to limit the extent to which the rail 36 may move into the compartment, i. e., toward the rear wall [2 of the cabinet or desk. Any other means may, of course, be provided for limiting the movement of the rail 36 relatively to the stationary track 56.

The balls or rollers 62 and 63 are arranged in suitable cages of approximately C-shape as clearly shown in Figs. 3 and 4. Each cagehas an upper arm with an aperture for the upper ball 52 and a lower arm for the ball 63. Means are provided to limit the movement of these balls or rollers to keep them in their correct locations relatively'to the rail 36 and track 56. For this purpose, projections H of any suitable type may be provided to restrict the extent to which the balls may roll on the stationary track 56. These projections may be formed by the heads of pins arranged in holes in the parts 66 and 6! of the track 56.

As a result of the construction described, it will be obvious that when it is desired to move the machine outwardly from the compartment, the plate will first roll on the rail36 until the stop 52 engages the bumper 53, whereupon the rail 36 will move lengthwise of the stationary track on the balls or rollers 62 and 63 until the bumper 66 moves into engagement with the stationary stop on the track 56 These various stops are so positioned that when both stops are in engagement with their bumpers, the truss plate will have been withdrawn to the forward limit of its movement Upon return of the plate with the machine supported thereby into the pedestal or container, the plate will roll along the rail 36 until the stop 52 on the truss plate engages astop or bumper 13 mounted on the rail 36, whereupon the truss plate and rail will move together into the inner position of these parts, at which time the bumper 68 on the rail 36 will engage stop65 on the stationary track 56, and thus prevent any part of the mechanism from striking the back wall of the desk or cabinet. Any other means for limiting the movement of these parts may-be employed, if desired.

the door opening in the front wall i4.

Additional means must, of course, be provided for holding the carriage including the truss plate 35 in upright position, and the bar 32 in correct relation to the desk or cabinet, and for this purpose a guide 15 in the form of a rail of substantially inverted U-shape is secured to offset portions 1-6 of the upright reinforcing plates or strips 51. The bar 32 of the carriage is provided with an upwardly extending stud or bearing pin 71, see particularly Figs. 2 to 4, on which a roller 18 is mounted to roll between the two downwardly extending flanges of the U-shaped guide rail 15. This roller will guide the rear end of the bar 32, and additional rollers 19 are provided for engaging opposite sides of this bar during its movement into and out of the compartment. These rollers may be suitably mounted on the guide rail 15 or v any fixed part of the desk or cabinet, andin the i5 is provided, which may be of inverted U shape and fitted over and secured to the front end of the guide rail, and the pivots for the rollers 19 may be welded or otherwise secured to this reinforcing member. One flange of the reinforcing memberBfl preferably extends forwardly beyond the guide rail 75 and may be secured to an inwardly extending flange 6| of the door opening of the front wall of the cabinet, for example, by means of a bolt 82. The rollers 78 and 19 also serve to maintain the bar 32 and trussplate 35 secured thereto in alignment with the rail 36 and track 56 during the lengthwise movement of the bar into and out of the pedestal container. Any other means for guiding the upper portion of the carriage for movement lengthwise of the compartment may be provided.

Means are also provided for holding the table top and supporting mechanism thereof in vertical or fully swung down position when the machine is to be housed in the pedestal or compartment, so that portions of the machine cannot be damaged by striking the wall I! or the edge of For this purpose, the frame member 26 is provided with a roller 83 suitably journalled on a bearing pin secured to the frame member 26 and so positioned as to cooperate with a suitable guide during the movement of the carriage into and out of the compartment. In the construction illustrated, this roller bears against that surface of an upright flange of the angle bar or angle-shaped member 84 which faces the side wall It of the cabinet. This angle-shaped member may be suitably secured to the lower ends of the reinforcing plates 5?. For example, the reinforcing plates may have their lower edges bent over, as shown at 85, Fig. 2, and welded or otherwise secured to the angle bar or guide member 84. Consequently, when the machine supporting frame is swung into vertical or hanging position, as shown in Fig. 2, the roller 83 can engage the upright flange of the angle bar 84 and thus hold the pivoted machine-supporting frame from swinging about its pivots 33 and 34 until the roller 83 passes beyond the front end of the flange of the angle bar 34.

Means are also provided for preventing the machine from being moved into the pedestal or compartment unless the roller 83 is in engagement with the surface. of the flange of the angle bar 84 which faces the side wall it]. This may, for example, be accomplished by providing a leaf spring 8?, Figs. 2 and 8, one end of which is secured by means of one of the bolts 59 to one holding the table top' gamers of the-reinforcing strips-=51, and the' other end of which normally eitends ihto the-path ot movementhf a part'of -'-the truss pla-te' 35, for example;"-the=loWer'fl'ange- ISof thisplate. Thespring mayp'air of lugs or projections 89 formed"on the -adjacent reinforcingplate 51. Cons'equentlyfi-normally'the spring 8'|{-would prevent movement or the-trusspla'te 35 along the -ra'i1'36. However, the i'nn'er end 'plate 28 of the-'supporting xstructure' for the table' top is so arranged.'asvtmniove into engagement With' the spring- 81 iwheni ithe machine supporting fraime has 7 been swungi into its lowest position; and thus 'move the outer end of-the spring 8l' 'into-- a 'osition in which it will be out of the path ofmovement of the flange of the truss' plate, 'and thus permit "the! truss plate to "be moved to' the 'le'ft in' 'FigI 2, when the m'acbincsupporting frame' has been swung into"positi'on to permit the r'ol1er-"83 -toengage the upright flange of the "angle bar'-84. This construction,"consequently, :prevents the moving 'of'the machine into' the. pedestal'oreompartment unless the roller= 83 engages the outersurface of this'flange, and-:thus" holds themachine in position in which it 'cannot be'damagewby contact with any parts: of't-he pedestal '-or--= com partment" while being-"moved" into the compartment and Whilestored therein. "Also w'hen -the machine is withd1-awn=-f1'om the compartment, the roller wi1l?'prevent"'the swingingmfthamachine supporting frame about its pivots-33 and ill-until the roller passes outof-engzigementwith the front end of the angle bar 84 and the-spring 81 again prevents inward movement of-the truss plate 35, at-which time themachine-will: be clear of the door opening inthe=frontwal1; so-that-no damage to the 'machine' can result irom 'such swinging of the machine supporting frame toward its operative position.

i The construction thusfar described has the advantage that the various parts of the mechanism can beassembled on the reinforcingplates or strips 51 on 'a-bench or other suitable support where all of--the parts are readily aocessible before-:they-are secured inthe-oabinet. -Whenthe various partsare assembled on these reinforcing plates orstrips 51, this mechanisrnmay be inserted int=a cabinet and the strips 51 secured beheldin correct position by means of -a to the frame members 18 of thecabinet by means of the bolts 59, thus greatly facilitating theassembly 'of the mechanism.

Suitablemeans arealso provided for securely locking the supporting frame of thema'chine in its horizontal or operative position and for guidingthe frame into this position. vIn the constructure shown for this purpose, a combined stop, looking and guide member is provided in: the form of a strike plate99,"one end 'of' which is bolted or otherwise secured to one of thenframe members 22, and 'the other end of which'may bebolted to an inwardly extending'fiange'fil of the front wall I 4 of the pedestal or cabinet, see "Figsf 5 and 6. his'strike platemay have'an integral stop92 formed thereon by partly'punching out-and bending over a portion of themietal -01 this plate. This stopisarranged in 'the path of movement of the frame member "iii and so positioned that-when the frame member 25 engages the'stop- 92;-the'table top-'25 will be in the operative or horizontal position.

A latch or locking device is alsoprovided for 25 and its supporting structure -in operative position, and for this purpose, the strike plate"='90 is provided with a recessmr opening- 94 into which a locking-bolt '95 may exar'm llll ofthe-sp'ring engagesan guide 'member" 96,' thisof the stop member '92,

thenotch 94 in the strike plate' 90. -'of this construction, a -very' secure "the table top-25 and -its -suppor-tingmechanism cabinet. For' 'thisis provided with -a notch or recess' l 01 "extend- 8 tend to engage with the lower: edge=of the recess ior 'holding the tab'le" top in operative -pos'ition. The recess- '94 is preferably inregistration-with an aperture in' the 'nange 9 [to permit the looking bolt to pass to the desired extent into engagement'with the-recess and aperture. This looking bolt" 95 has a 'shanlc'fil guided for movement into and out of locking position in a channelshaped guide member 96 which -is --we1ded" or otherwise secured atits' endsto the 'longitudix'ial frame-'m'embers 26 -and 21 'of the machinesupport. -The-bolt is' slidable within -this guide member 96 and may =be he1d against movement through the open 'realrw'ardly directed face thereof; for example, 'by-'means 'ofpins" 98 -e'xten'ding through apertures in the fianges' of" the channel-shaped member.

The locking bolt is'spring-urged intoposition toenter-the notch-or'recess 94. 'In the construction' shown; a coilspring '99 is employed for this purpose which has -two outwardly-extending arms. -One arm-1'00 of this spring isformed to enter'a pair of apertures'in the-fianges=of the guide housing orchannel '96,-thisarm having one or more bends thereinto prevent dislodging of' the same from the' -holes-inthe flanges when the spring is in operative position. Theother end portion 1'02 of -a-1atch release-lever I03,- this lever being pivoted at 104 on-an extension lfi5-of the latch extension being formed by bending a portion-of the upper flange of the channel-shaped member 96 upwardly, and providing an aperture ther'ein' to receive the pivot member 'I 04 of the "release lever. Consequently, the arm lfll of the spring-yieldingly urges the release lever 1'03 into its upperpositi'om shown gagement with the'nbtch' M-of the strike' 'pl'ate "90. The lockingbolt'and the stop member are so located that when'the frameme'mber' -IG swings into'engagement with-the under surface 'the latch' 95 simultaneou'sly" moves' into engagement with the edge J of -As a res'ult holding 'of is'made possib1e,-'-'and since the weight of the machine and its supporting frame will exe'rt a downwardly directed force on the' locking *bolt and-'anupwardly directed-force on the stop-projection'"92, there'will be no lostm'otion or play between the machine supporting frame andthe de'sk'or cabinet.

Means are' also pr'o'vided' forsuitably guiding machine in"the"d'esired operative position on the purpose, the strike plate ing upwardly from the lower surface' there'of and having downwardly fla'ring sides or edges. This notch or recess is in'the path of movement oftbushing 108 arranged 'about' the -pivot"of' the roller '83. The"flaring"edges of thenbtch guide this bushing into'its seating position in the upper end ofthe notch', arid wh'en in this p0sition,: the latch' w-ill :be in position to engage in the -notch operative positions to avoid=' v ibrations"of the machine and table top during the use of the machine.

' When it is desired to swing the table top 25 into operative position after it has been fully with drawn from the pedestal or compartment, this may be effected by grasping the rail or handle 30 and swinging the machine-supporting mechanism about the pivots 33 and 34 until the bushing I08 enters the notch I01. Further upward movement may cause a slight shifting, either forwardly or rearwardly, of the machine-supporting frame because of the flaring sides of the notch I07, and when the bushing I 08 is in its upper position, the frame member 26 will engage the stop 92 and the latch will move into its locking position. When it is desired to lower the machine, 'it is merely necessary to depress the latchreleasing lever I03 and then swing the machine and its supporting frame downwardly about the pivots 33 and 34.

The mechanism may, of course, be provided with the usual counterbalancing springs to compensate at least in part for the weight of the machine and the pivoted support therefor. Any suitable means for mounting a counterbalancing spring or springs may be provided. In the construction shown, a pair of supportingsprings I IE] and III are provided, the ends of which may be provided with loops adapted to engage cross bars H2 and H3. The cross bar II2 may be secured intermediate of its ends to a bracket member I I5 welded or otherwise secured to the truss plate or member 35. The cross bar H3 may be secured to or formed integral with a screw H6 extending through an aperture of the bracket II? which may be secured to or formed integral with the transverse frame member 28 of the machine supporting frame, as shown in Figs. 1, 2, and '5, and a nut IIB may be provided on the screw I93 for adjusting the tension of the springs III! and I II so as to counterbalance to the desired extent the weight of the machine and supporting frame therefor, and thus facilitate the moving of the same into and out of its operative position.

It is, of course, desirable to securely hold the door I5 in its open position while moving the machine into and out of the pedestal or compartment, and for this purpose, I have provided a door stop, shown particularly in Figs. 2, 8 and 9. This door stop includes a strip or bar I29 pivoted at IZI on a bracket or extension I22 suitably secured to the inner face of the door. This bar or strip is slidable on a bracket I24 suitably secured to an inwardly extending flange I25 on the bottom of the door opening in the front wall I4 of the pedestal. The bracket I24 has an upwardly extending flange I 26 provided with a slot therein through which the strip or plate I20 extends, and this strip is provided at its inner end with a suitable stop to limit the extent to which the door may be swung into open position, this stop, in the construction shown, being formed by bending over the end of the strip I29 as shown at I21. Consequently, the door can only be swung into open position until the stop I21 engages the flange I25 of the bracket I24.

The door may be yieldingly held in open position by means of a notch or aperture I29 in the strip or bar I20, and a spring-pressed ball I 39 mounted on the bracket I24 is yieldingly urged to extend partly into the notch or aperture I 29 so as to yieldingly hold the door in its open position. When the door is to be closed, a slight pressure on the door will deflect the ball downwardly out of the notch or hole I29 and permit the stri or bar I20 to slide through the slot in the flange I26 until the door is closed. Any other suitable means for holding the door in open position and limiting the swinging of the same into open position may be provided, if desired.

It will be understood that various changes in the details, materials, and arrangements of parts which have been herein described and illustrated in order to explain the nature of the invention, may be made by those skilled in the art within the principle and scope of the invention, as ex-' pressed in the appended claims.

The term cabinet as herein 'used is intended to apply to adesk or other device having a compartment therein to receive a typewriter or other machine.

I claim as my invention:

1. The combination with a cabinet having a machine compartment, of a rail mounted on'a side of said cabinet, a truss member having the lower portion thereof guided for movement lengthwise of said rail and extending upwardly above said rail, a bar rigidly secured to the upper part of said member and extending forwardly be yond said truss member, a machine supporting frame pivoted on said bar, and a guide rail above said first mentioned rail and cooperating with said bar for guiding said bar and truss member for movementinto and out of said compartment. 2. A construction according to claim 1, in which a track is provided which is secured to said cabinet and on which said first mentioned rail is mounted for limited movement into and out of said compartment.

3. The combination with a cabinet having a machine compartment, of a rail mounted on a side of said cabinet, a truss member having the lower portion thereof provided with two pairs of rollers, the rollers of each pair being arranged one above the other, said rail extending between the rollers of said pairs and having its upper and lower surfaces formed to cooperate with said rollers, a track secured to said cabinet and on which said rail is mounted for lengthwise movement, stop means for limiting the extent of movement of said member on said rail and said rail relatively to said track, and a machine supporting frame mounted to swing relatively to said member.

4. The combination with a cabinet having a machine compartment, of a truss member having a rigid bar secured to the upper portion thereof, means on said cabinet for guiding said barfor movement in the direction of its length, a ma chine supporting frame pivotally mounted on said bar to swing about a pivotal axis which is substantially parallel to said bar, and a guide rail on which the lower portion of said truss member is guided for movement thereof into and out of said compartment, said guide rail supporting the entire weight of said truss member, bar and parts mounted thereon and having upper and lower surfaces on which said truss member bears to hold said bar in substantially horizontal position during its movement into and out of said compartment.

5. The combination with a cabinet having a machine compartment and a machine supporting frame, of a carriage of substantially cantilever shape having a forwardly extending part on which said machine supportin frame is hinged to swing about an axis extending lengthwise of said compartment, a rail on which the lower part of said carriage is mounted to move lengthwise of said compartment, said rail being located in the lower portion-i of .said' compartment, v, and ,a guide-trail arranged" in the :uppen portion: of Y saidcompart+ ment in spaced relation rto.- 'saidfirst mentioned railnzandmwith which the"- upper portion of said carriage cooperates-itoi-ihold said carriagesin .upright position.-.

6;--The combination ofsa cabinetahavinga machine-i compartment: 7 and provided at one: side thereofwith'upper andlower guides and a-rail arranged intermediate of i said guides, a -=tr-11Ss member movable at-zsaidside ofsaid compartment lengthwise oi"-.-.-the zsamei andhav-ingthelower portionthereot supported by end-movable onwsaid -1-intermediate rail, a part *on said -tr-uss member. engaging-said upper guide-to maintain said truss member in upright position, ing frame for a machinefipivotally;mountedon thehupper portion of said trussmember to'swing into 2; vertical and ;-a horizontal position; said lower.-guide having an upright-flange spacedrfrom said-sideof sa-i'd compartment; and apart onsaid' framearranged to enter into the-space between saict 1 upright flange and i said side of said com-s pertinent-when said supporting frame is. in vertical-position-to:ho1d said'frame memberv against swinging out of a substantially verticalposition when said-truss-imember 1s moved-lengthwise of said-cabinet.

7 Thecombination with a .-cabinet having: a

machine compartment and a'machinel supporting frameaof-acarriage on which said machinesup-- porting frameais mountedto swing into ia-.1ower andinto an upper operative position, airailw onnwhich,

position-for entry-into-said compartment saidparriage is mounted-lto -move into" and-aout of saidncompartment a track secured to saidacabi net andon which said =railis mounted to move in a'direction paral-lel-to: said: carriage; said-rail having its upper and lower edge-v portions "of:

V-shaped cross" section*- to form: inner trough shapedwportions; said .--trackhavingoutwardly facing trough-shaped grooves, rolling smembers' inssaid trough-shaped portions of saidtrack and rail,:awheels on-said carriage engaging the uppen and-wlower 'edgeportionsof said rail,- and=- stop members'on-said carriage; saidrail and said track to-limit--the movement ofrsaid ca-rriagerelatively tor-said'compartmenti- 8. The combination with a cabinet having-fa maohine compa rtment' and a machine supporting frame-,- oi. a 'carriagermovable' into and out of said compartmentandonwhichsaid-frameis hinged: ly mounted to-swing :into' a lower position tdenter said compartment and upwardly into an upper position when-said carriage is in its outer: posi= tion with reference to said compartment; a membe-r. mounted on said cabinet and extending into the pathioi movement of said carriage into -saidcompartment: when said frame-is -swung;=out of its- 1owe1- .position, andimeans on said -frame for moving-:said'member: out of its position' inthe frame, of a, carriage. movable into and-out of said compartment and onwvhichsaid frame is hingedlya-mountedto'swinginto a lower'positionto enter said compar-tment and upwardly intoan upper position when said: carriage is: in its outer position with. reference "to saidcompartment; a guide raihin the-lower part of said-compartment,-.a part on said-"frame :arranged to cooperate with saideguidewrail.when: said frame :isiirr-itselower a support-= position and when said carriage; is. moved into said compartment to hold said frame casainst' swinging outof its: lower positionzwhendnzsaid compartment,-a detent-member mounted onsaid. cabinet and extending into the pathof movement of said carriage to prevent movement of the same-into said compartment when said :frame is swung out of its lower position, and apart on said .frame which engages said detent-member. whensaid frame is in its lower positiontmpem mit movementhof saidcarriage into saidcom-.' partment.

10. The combination:with a cabinetv having a machine compartment and a machine-supporting frame, of a carriage movableiinto and out of said compartmentiand on-which said frame is hinged-J ly mounted to swing into a lowerposition to enter said. compartment and Y upwardly into an; :upperposition when said carriage is in its outer position with reference to said compartment,- aguidezrail in the lower partof :said compartment,v a. part on. said frame arranged to cooperate with said guide rail when said-frame is in itslower position and when-said carriage is moved into said-com partment' to i hold saidframe vagainst,iswinging; out of its lower position when'inv saidcompartw ment, a spring-mounted-on said cabinet and ex! tending into the path. of.-movement-of said car-1 riage into said compartment-whensaid frame iSflSWuIig outwof its lower position, and apart on saidframe arrangedto engage said. spring when .inits lower position'to. permit said carriage. .tomove into saidicompartment.

11. The combination. with a cabinet havinga machine compartment, of a rail mounted-011.5 side .of. said cabinet, a truss member having the lower portion thereot guided for movementlengthwise -of said rail and extending upwardlyabove said rail, a bar rigidly secured to the upper part of said member. and extending forwardly: beyond saidtruss member, amachine support! ing frame pivoted onsaidbar, abracketsecured to -.said .trusshmember and extending upwardly above the same-and a counterbalancingspring. connected atone end to thetupper. portion of said bracket and havingthe otherendsecured to said frame for exertingcan upward .pull onsaidirame" 12. In a cabinet having, a machine rcompartment and-:a machine .supportingframe movable into and out of said-compartment while .in sub-lstantially vertical. position anduwhich may bev swung into a substantially horizontal position while out of said compartment, that-improvement. which includes a strike plate secured/to saidl cabinet and havinga stopthereon which extends: into. the path .ofmovementv of said frameswhen; the .same. has been: swung into a substantially, horizontal-position, said strike plate having-am opening therein, a latch-member on. said frame and-positionedto enter said -opening ,wh'en said. frame strikes said stop, said latch :releasably hold-e ingsaid frame-in said substantially horizontal position, and interengaging parts on said-strike. plate and said-frame for guiding 'said'frame into: correct operative relation to said-:cabinet,-,includ=- ing a recess in the lower edge of said strike plateand aprojecting- ,part on said frame formedzto enter said recess when said-frame is incorrect" relation to said cabinet.

13. Aeconstruction according to claim 12,.in which said recess in said strikeplatehas downwardly and-outwardly flaring side edges, said flaring side edges-when'engaging saidpart on said. frameserving to shiit said frameinto1 correct" relationto:said-:cabineti 14. The combination with a cabinet having a machine compartment and a machine supporting frame, of a carriage on the upper portion of which said machine sup-porting frame is mounted to swing into a lower position for entry into said compartment and into an upper operative position, a rail on which the lower portion of said carriage is mounted to move into and out of said compartment in a direction lengthwise of said rail, a track secured to said cabinet and on which said rail is mounted to move in a direction parallel to the movement of said carriage, cooperating stops on said carriage, said rail and said track for limiting the movement of said carriage and said rail into and out of said cabinet, an upper guide secured on said cabinet in spaced relation to said rail and track, and a part on the upper portion of said carriage engaging said guide for holding said carriage in upright position and in correct relation to said rail during the movement of said carriage in said compartment.

15. The combination with a cabinet having a machine compartment and a machine supporting frame, of a carriage on the upper portion of which said machine supporting frame is mounted to swing into a lower position for entry into said compartment and into an upper operative position, a rail on which the lower portion of said carriage is mounted to move into and out of said compartment in a direction lengthwise of said rail, a track secured to said cabinet and on which said rail is mounted to move in a direction parallel to the direction of movement of said carriage, wheels mounted on said carriage and engaging upper and lower surfaces of said rail, rolling arts interposed between said track and said rail, an upper guide secured on said cabinet in spaced relation to said rail, and a part on the upper portion of said carriage engaging said 14 guide for holding said carriage in upright position and in correct relation to said rail during the movement of said carriage lengthwise of said rail.

16. In a cabinet having a machine compartment provided with an opening therein through which a machine may be moved into and out of said cabinet, a plurality of upright frame members forming a part of a side wall of said cabinet, a carriage, a machine supporting frame hingedly mounted on said carriage, guide members lengthwise of which said carriage is movable, and a plurality of upright reinforcing members of less height than said opening and on which said guide members are rigidly secured with said carriage and machine supporting frame mounted thereon, and means connecting said upright reinforcing members to said upright frame members of said cabinet after said carriage, said guide members and machine supporting frame are assembled on said reinforcing members.

FLOYD H. BLOOMSTRAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,231,291 Otte June 26, 1917 1,534,201 Blin Apr. 21, 1925 1,776,464 Blackman Sept. 23, 1930 1,802,552 Corcoran Apr. 28, 1931 2,224,020 Jones Dec. 3, 1940 2,271,241 Reitzel Jan. 27, 1942 2,289,664 Link July 14, 1942 2,345,254 Graff Mar. 28, 1944 2,372,718 Fox Apr. 3, 1945 

